{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42276 exists.","fix":"No fix has been published for CVE-2026-42276 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-42276 is a medium-severity missing authorization vulnerability in onyx-dot-app onyx, published on 8 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-42276 and fix it if it is affected.\n\nWhat it is: CVE-2026-42276 is a medium-severity missing authorization vulnerability in onyx-dot-app onyx, published on 8 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42276 exists.\n\nAffected product: onyx-dot-app onyx. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-42276/ (Markdown: https://insights.sbomify.com/CVE-2026-42276/index.md)","id":"CVE-2026-42276","markdown":"https://insights.sbomify.com/CVE-2026-42276/index.md","name":"CVE-2026-42276","record":{"aliases":["GHSA-rw6w-hp62-gc8w"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Onyx AI platform","requires_auth":"low_privilege","summary":"Authenticated users can interrupt other users' active chat sessions by exploiting a missing ownership check in the stop-chat-session endpoint.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"onyx","vendor":"onyx"}],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the POST /chat/stop-chat-session/{chat_session_id} endpoint lets any authenticated user stop any other user's active chat session. The endpoint checks authentication but never verifies the session belongs to the caller. An attacker who knows a chat session UUID can kill another user's LLM generation mid-stream. This issue has been patched in versions 3.0.9, 3.1.6, and 3.2.6.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Onyx: IDOR in /chat/stop-chat-session allows any authenticated user to interrupt other users chat sessions","id":"CVE-2026-42276","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Onyx: IDOR in /chat/file/{file_id} allows any authenticated user to download other users files","id":"CVE-2026-42277"},"packages":[],"prev":{"headline":"zrok: WebDAV drive backend follows symlinks outside DriveRoot, enabling host filesystem read/write","id":"CVE-2026-42275"},"products":["onyx"],"published":"2026-05-08","related":[{"cvss_score":6.5,"headline":"Onyx: IDOR in /chat/file/{file_id} allows any authenticated user to download other users files","id":"CVE-2026-42277","kev_date_added":null,"published":"2026-05-08"},{"cvss_score":6.5,"headline":"Improper Access Control in danswer-ai/danswer","id":"CVE-2024-7767","kev_date_added":null,"published":"2025-03-20"},{"cvss_score":6.5,"headline":"Unauthorized Access in danswer-ai/danswer","id":"CVE-2024-9612","kev_date_added":null,"published":"2025-03-20"},{"cvss_score":5.4,"headline":"Missing authorization in n/a","id":"CVE-2025-51479","kev_date_added":null,"published":"2025-07-22"},{"cvss_score":5.3,"headline":"Onyx Chat Interface a3_generate_simple_sql.py generate_simple_sql sql injection","id":"CVE-2025-7894","kev_date_added":null,"published":"2025-07-20"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-08","vendors":["onyx-dot-app"]},"summary":"Authenticated users can interrupt other users' active chat sessions by exploiting a missing ownership check in the stop-chat-session endpoint.","url":"https://insights.sbomify.com/CVE-2026-42276/"}